Hydrophone array WellStreamer

The borehole hydrophone array is designed for crosshole seismic testing on longitudinal (P-) waves. The hydrophone modules utilize highly sensitive piezoceramic sensors with preamplifiers. The default number of modules on the cable is 24, but per Customer's request it can vary from 1 to 48. The standard interval between pressure sensors is 1 m and the total length of the seismic array can reach 200 m or more.

The hydrophone array can be supplied on a reel with slip ring, which allows to leave the equipment plugged into it while winding and unwinding the cable.

Сhannels

1-24

Frequency range

1 - 10 000 Hz

Capacity of piezoelectric element

4 000 pF

Maximum pressure

60 at

Breaking pressure

100 at

Supply voltage

12- 16 V

Current consumption per channel

10±1 mA

Output impedance of the preamplifier

395 Ohm

Maximum value of the output signal

±3,8 V

Operating temperature range

-10 .. +70 °С

Storage temperature range

-40 .. +70 °С

Diameter of the hydrophone module

42 mm

Length of the hydrophone module

200 mm

Weight of the hydrophone module

300 g

Interval between hydrophones

on request, but ≥ 0.25 m

Braiding of a cable

polyurethane

Longitudinal cable sealing

+

Screening of cable and hydrophone module

+

Cable reinforcement

kevlar

Operating load

200 kg

Breaking force

400 kg

Cable diameter

13 mm

Minimum cable coiling radius

120 mm

Minimum coiling radius of the active section

220 mm

Cable Weight

168 g/m

The weight of a streamer length of 130 m with a reel

38 kg

Dimensions with reel

500×600×400 mm

Maximum cable system length

700 m

End Connector

by agreement

End load

the lower end of the cable system is equipped with a weight-bearing loop; load can be supplied as agreed